Rubber Kisser Button

I have a rubber kisser button on my bow and once in a while it will slide up or down, is there anything I can do to keep from sliding? Should I add a little bit of serving above it and below it so it cant slide? Its on tight, but i liked the plastic ones better. I just cant find the plastic ones anymore.

 

The serving may slide too unless you can start it in between the string.

 

Nothing else slides other than my speed buttons. Just the darn kisser. I wonder if its because of it being rubber?

 

When I used to use a kisser (got rid of it this year - and happy I did) I used to serve it directly to the string. Worked like a charm!